in my view , any bike can be snatched or stolen , its simply on the mood of the snatcher , honda cg 125, honda cdi 70 have the highest probability of being snatched.my cuzins honda 125 whch he just bought a month before got snatched at nagin chowrangi , the bike was on installments , poor him , hes crying like hell.they even took the grocery that was tied with the handle bar.
now coming to ur question , unique , superpower and star all of them have the same probabilty of being snatched ,,there is not much preference thing in the mind of the snatcher(these are my views , dont take me as one of the thugs looting here in karachi :p)